NOISE, COHERENCE, AND REVERSIBILITY IN JOSEPHSON ARRAYS

被引：9
作者：
WIESENFELD, K
机构：
[1] School of Physics, Georgia Institute of Technology, Atlanta
来源：
PHYSICAL REVIEW B | 1992年 / 45卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.45.431
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The noise sensitivity of Josephson-junction arrays is greatly enhanced in the presence of a so-called "reversibility" symmetry. We use a simple dynamical picture corresponding to a diffusion process in phase space to calculate the power spectrum of the total array voltage. Breaking the reversibility symmetry leads to a crossover from incoherent to coherent oscillations, reflected by improved scaling of the voltage with respect to array size. In the limit where the in-phase orbit is strongly attracting, the results agree with previous theoretical and experimental work.
引用
收藏
页码：431 / 436
页数：6
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